As mad at the witches as he is, (and boy is it a lot,) Eames is less interested in starting a fight than he is in undoing whatever it is they've done. Has his gun ready, but that's just in case some witch or other sees through the glamour and tries to start something.

In the meantime, he pauses once he starts to feel something stronger than the ambient magic in the air, like walking against the wind-- he suspects if he crossed to the next borough it'd be like there was nothing at all. He surveys the street for any obvious signs of magic, but he can't see anything just yet. Not unless someone's about to sacrifice one of those kids anyway.